Hankook dynapro AS tire failures: what 72 owner reports say
Every complaint filed with NHTSA against the Hankook Dynapro AS, read and classified: which failures owners actually describe, how that mix compares with all tire complaints on file, and at what mileage the tire let go.
The evidence base
Crash, injury and death figures are the counts owners themselves reported to NHTSA when filing.
What owners described
Cracking or dry rot appears in 18% of these reports; about 1.9× as often as across all tire complaints. Percentages are shares of the 72 reports filed against the Hankook Dynapro AS across every vehicle it was fitted to that include a written account; a single report can describe more than one problem, so they do not total 100%.
| Reported problem | This subject | All tire complaints | Relative |
|---|---|---|---|
| Cracking or dry rot | 18% | 9% | 1.9× |
| Blowout or sudden deflation | 14% | 20% | 0.7× |
| Tread or belt separation | 11% | 13% | 0.8× |
| Sidewall failure | 11% | 15% | 0.7× |
| Loss of control, rollover or collision | 8% | 8% | 1.0× |
| Bubble or bulge in the tire | 7% | 6% | 1.2× |
Mileage at failure
47 of these reports state an odometer reading. The middle report is at 17,000 miles, with 8 in 10 falling between 3,000 and 90,000 miles.
In owners' own words
Verbatim excerpts from complaints filed with NHTSA about Hankook Dynapro AS. Reports are published by NHTSA as filed and are lightly cleaned here only to remove intake codes.
THE CONTACT OWNS A 2013 FORD E-250 EQUIPPED WITH HANKOOK TIRES, TIRE LINE: DYNAPRO AS, TIRE SIZE: LT245/75R16. THE CONTACT STATED THAT WHILE DRIVING 65 MPH, THE REAR PASSENGERS SIDE TIRE TREAD SEPARATED FROM THE WHEEL. THE VEHICLE WAS TAKEN TO A DEALER AND THE TIRE WAS NOT REPLACED. THE FAILURE MILEAGE ON BOTH THE VEHICLE AND THE TIRES WAS 11,000. UPDATED 9/4/14*CN THE COMSUMER STATED THE TIRE LOOKS AS IF IT CONTAINS DRY ROT. UPDATED 12/18/2014
HANKOOK DYNAPRO AS P235-70-R17S TIRE WITH APPROXIMATELY 60% WEAR (ACCORDING TO FORD DEALERSHIP WHERE VEHICLE WAS PURCHASED AND TIRES REPLACED). DURING NORMAL DRIVING NOTICED ABNORMAL BUMPING THAT APPEARED TO BE ASSOCIATED WITH TIRE OR FRONT END. TOOK VEHICLE TO SHOP TO CHECK BALANCE AND WHEEL ALIGNMENT. TECH FOUND THE ABOVE DESCRIBED TIRE HAD SEPARATED AND THE STEEL BELTING WAS PROTRUDING THROUGH THE TREAD AND TOP OF SIDEWALL. TIRE WAS ABOUT TO FAIL. DRIVER CONTACTED HANKOOK AND FORWARDED A PHOTOGRAPH OF THE TIRE TO THE REPRESENTATIVE. HANKOOK AGREED TO A 40% REFUND OF THE AMOUNT THAT FORD PAID (NOT WHAT I PAID) FOR THE TIRE IF I WOULD RETURN THE TIRE OR A PIECE FROM IT CONTAINING THE DOT NUMBER. FORD TOOK THE TIRE FOR RETURN TO HANKOOK. THREE WEEKS HAVE PASSED AND I HAVE NOT HEARD BACK FROM FORD OR HANKOOK.
THE CONTACT OWNS A 2004 FORD F150. THE VEHICLE WAS IN THE REPAIR SHOP FOR A SLOW LEAK ON THE FRONT PASSENGER SIDE TIRE SO THE MECHANIC PLUGGED THE TIRE. WHILE MOUNTING THE TIRE TO THE VEHICLE IT EXPLODED. THE EXPLOSION WAS CAUSED BY SEPARATION OF THE TIRE BEADS. THE MECHANIC MOUNTED THE SPARE TIRE. AFTER DRIVING TEN MILES THE SPARE TIRE BLEW ALSO DUE TO TIRE BEAD SEPARATION. THE TIRE BEADS WERE COMPLETELY SEVERED IN BOTH FAILURES. THE FAILED TIRE BRAND IS HANKOOK DYNAPRO, SIZE, P235/75R17. THE CONTACT WAS DRIVING 5 MPH WHEN THE SPARE TIRE FAILED. *AK UPDATED 2/22/2007 - *NM UPDATED *JB UPDATED 04/16/07
PURCHASED A FORD E-350 IN OCTOBER OF 2005 WITH 5 HANKOOK LT 245/75 R 16'S AFTER 28,000 MILES AND 70 % OF TREAD REMAINING THE CORD SEPARATED IN THE TIRE TREAD CARACAS RESULTING IN A FLAT SPOT CORRESPONDING TO A BUBBLE ON THE INSIDE OF THE TIRE. WHEN I SOUGHT HELP FROM HANKOOK NATIONAL AND MS. JUDY HERSHBERG 973-633-9000 AND THE LOCALK DISTRIBUTOR MIAMI TIRE DEALERS WAREHOUSE' JOSE PHONE 888-833-3953 I WAS NOT ASSISTED IN ANY WAY, SHAPE, OR FORM, ALL THEIR SUGGESTIONS AND ARRANGEMENTS FELL ON DEFT EARS. CONSIDERING THE MILEAGE, NOW 34,000 + AND THE YEARS, 3, I COULD NOT IN REALITY EXPECT AN ADJUSTMENT. I WOULD LIKE TO REPORT THE TIRES AND AS MUCH INFO AS I CAN GET FROM THEM TO YOU FOR A POSSIBLE RECALL FOR THE SAKE OF PUBLIC SAFETY AND THE WELFARE OF CITIZEN DRIVERS AND THEIR SAFETY.
How to read this
Complaints are voluntarily submitted to the NHTSA Office of Defects Investigation and are not verified by NHTSA. They are owner-reported problems, not proven defects, and volume tracks how many of a tire were sold as much as how often it failed. What is comparable is the mix: which problems owners describe here versus across every tire complaint on file. That comparison, the mileage distribution and the mode rankings on this page are our analysis of the public record.
Related analysis
- Cracking or dry rot; 1.9× the corpus rate here; see which other tires over-index
- Hankook Ventus S1 Noble 2; 72 reports
- Hankook Optimo H725A; 34 reports
FAQ
What goes wrong with Hankook Dynapro AS tires?
Is the Hankook Dynapro AS recalled?
At what mileage do Hankook Dynapro AS tires fail?
Have Hankook Dynapro AS failures caused crashes?
Sources
Last verified 2026-10-07 against the sources below.
- NHTSA Office of Defects Investigation; owner complaints dataset (unverified owner reports, US federal government work, public domain).
- NHTSA Recalls database, nhtsa.gov/recalls.
- Corpus baselines computed over 58,390 complaint narratives longer than 200 characters.